Improvement in gang-edgers



L. S. H'O'GEBUOM;

GANEnE-n. 1- 1 110.172,121. satema Jan. 11, '1875.-

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WITNESSES MMM# v VENTOR ff/Mw M 016,.

ATTORNEYS N PETERS. PHOTO-LITHOGRAPHER. WASMINGOFt D C.

UNITED' STATES PATENT QFFICE.

LEVI S. HOGEBOOM, OF THREE RIVERS, MICHIGAN, ASSIGNOR TO THREE RIVERSMANUFACTURING COMPANY, OF.SAME PLACE.

IMPROVEMENT IN GANG-EDGERS.

Specification forming part of Letters Patent No. '172,12 l, datedJanuary 11, 1876; application led October 23, 1875.

To all whom it may concern:

Be it known that I, LEVI S. HoGEBooM, of Three Rivers, in the 'county ofSt. Joseph and State of Michigan, have invented a new and valuableImprovement in Gang-Edgers; and I do hereby declare that the followingis a full,

' clear, and exact description of the construction Same,

This invention has relation to `improvements in gang-ed gers; and itconsists in certaln iin- )rovements in `an r-ed (fers as will be hereinlb 7 after more full-y set forth.

In the annexed drawings, the letter A represents a suitable uprightframe, upon which are arranged, in bearings, corrugated or ribbedrollers B B', and between them the shaft C of a gang of saws, D Dl D2.Shaft C is provided upon ,one 'end with an actuating-pulley, c, and uponits other end with a cone-pulley, E, cons'sting, preferably, of twoparts, b c, the large one, b, being next the frame. The correspondingends of the journals of rollers B B' are provided with coilepulleys F F'of equal diameters, but of greatery diameter than pulley E, whichpulleys are also, preferably, composed of two parts, d d', the smallerpart, d', being next the frame. The effect of this construction is thatthe larger wheels of cone-pulleys F F are in line with -the smallerwheel, c, of cone-pulley E, and

the larger wheel, b, of the latter in line with the smaller wheels ofthe former, the purpose of which will hereinafter appear.

The gang-saws are operated, preferably,

Vthrough an endless belt applied over pulleycone-pulley E on shaft C ofthe gang-saws. By this means the gan g-saw shaft and the rollers areactuated by one and the same endless belt communicating withv the motor,and the speed of motion of the rollers relative to that of the gang-sawsmay be increased or diminished, as the necessities of the case mayrequire, by shifting the belt G from the outer to the inner wheels d bof cone-pulleys F F' E, or' from the inner to the outer wheels thereof,the effect of the former operation or change being to increase the speedof rotation of the rollers, and of the latter change to diminish itWithout in any degree changing in either case the speed of the motion ofthe gang-saws. By this means I am able t0 saw olI the waneylil parts oflumber of dierent kinds and of different degrees of hardness without danger of stopping the saws or impairin g their efficiency, either throughthe too rapid feed of the lumber to the saws or because of the feedbeing too slow.

In order that the ends of the lumber may be prevented from beingsplintered oii' by the action of the saws after leaving feed-roller, Ihave devised the following simple device: I use a strong,slightly-bridged rest-bar, J, the upper surface of which is in the samehorizontal plane with rollers B B', which bar is arranged between thesaws and the feed-roller B', and is provided upon its extremities with abase-plate, e, through which is cut a slot, s. Through these slotsset-screws S are passed, which, being forcibly set up, will clamp thebase of the rest-bar to the frame in suitable proximity to the saws toprevent the ends of the lumber from being splintered or broken oi' upontheir under sides.

The rest-bar, being adjustable, is capable of being moved nearer thesaws when from frequent sharpening and long use they have decreased indiameter, thus providing an always effective rest for the purpose abovedescribed.

What I claim as new, and desire to secure by Letters Patent, is

l. In a gang-edger, the combination of the intermediate gang-saw shaftC, having conepulley E, tapering outwardly, the rollers B B', Intestimony that I claim the above I have having; cone-pulleys F F',tapering inwardly, hereunto subscribed my name in the presence and theshifting-belt Gr, adapted to be changed of two Witnesses. from one ofthe sets of Wheels of the said oonepulleys to the other, substantiallyas and for l LEVI S. HOGEBOOM. the purpose set forth. v

2. In combination with the rollers B B and Witnesses: a gang of saws,the adjustable rest-bar J, sub- O. F. BEAN, stautiallyf as specified. YFRED. J. SELDEN.

